Root-end surgery (removal of a tooth cyst)
apicoectomy · root-end surgery · tooth cyst removal · surgery on the tooth root
Through a small cut in the gum, the surgeon removes the tip of the tooth root along with the cyst. The tooth itself stays.
When there is a cyst or inflammation at the tip of the root and re-treating the root canals does not work.
⏱ Duration: the operation usually takes 30 to 90 minutes

Be sure to tell your doctor
How to prepare
- X-rays. A 3D scan of the tooth is usually needed.
- Root canals. The tooth's canals are often filled before the operation. Ask your doctor.
- Food. Eat 1 to 2 hours before the operation.
- The day before. No alcohol.
What to bring
- An ID
- X-rays of the tooth
- A list of your medicines
How it goes
- Numbing is given by injection
- The surgeon cuts and lifts the gum over the root
- Makes a small window in the bone
- Removes the cyst and the tip of the root
- Sometimes seals the root from the end
- The gum is stitched
What you'll feel
- Under numbing, you feel pressure but no pain
- Afterward, a swollen cheek and pain for 2 to 3 days, and you are given a painkiller
- You may get a bruise on your face
Afterwards
- Hold a cold pack on your cheek for the first hours, with breaks
- Soft, not hot, food for a few days
- Do not chew on that side
- Do not rinse your mouth hard on the first day
- Stitches are usually removed after 1 to 2 weeks
Contact a doctor straight away if
- Bleeding does not stop when you press on it
- A fever over 38°C (100.4°F), or swelling that grows after day 3
- Swelling spreads to the neck, or trouble swallowing or breathing: call emergency services
Common questions
Will the tooth stay strong?
Usually yes. The root becomes a bit shorter, but the tooth keeps working.
Why not just remove the tooth?
Keeping your own tooth is better when possible. Your doctor will say if there is a chance.